void InitPalette()
{
int i, c1, c2, c3;
int offset = nColorCount / 3;
for (i=0; i < nColorCount; i++)
{
c1 = GetLuminance(i);
c2 = GetLuminance(i+offset);
c3 = GetLuminance(i+(offset*2));
_pRgb[i] = RGB(c1, c2, c3);
}
}
/////////////////////////////////////////////////////////
// processImage
//
/////////////////////////////////////////////////////////
void pix_lumaoffset :: processRGBAImage(imageStruct &image)
{
const int nWidth = image.xsize;
const int nHeight = image.ysize;
if (!init) {
init = 1;
}
U32*pSource = reinterpret_cast<U32*>(image.data);
myImage.xsize = image.xsize;
myImage.ysize = image.ysize;
myImage.setCsizeByFormat(image.format);
myImage.reallocate();
U32*pOutput = reinterpret_cast<U32*>(myImage.data);
const int nNumPixels=nWidth*nHeight;
const int nOffsetScale=static_cast<int>(m_OffsetScale);
const int nLineGap=static_cast<int>(m_LineGap);
Pete_ZeroMemory(pOutput,(nNumPixels*sizeof(U32)));
U32* pCurrentSource=pSource;
U32* pCurrentOutput=pOutput;
U32* pSourceEnd=(pSource+nNumPixels);
U32* pOutputEnd=(pOutput+nNumPixels);
if (!m_DoFilledLines) {
while (pCurrentSource<pSourceEnd) {
const U32* pSourceLineEnd=pCurrentSource+nWidth;
while (pCurrentSource!=pSourceLineEnd) {
const U32 SourceColour=*pCurrentSource;
int nLuma=GetLuminance(SourceColour);
nLuma-=(128*255);
const int nOffset=(nLuma*nOffsetScale)>>16;
U32*const pOffsetOutput=
pCurrentOutput+(nOffset*nWidth);
if ((pOffsetOutput<pOutputEnd)&& (pOffsetOutput>=pOutput)) {
*pOffsetOutput=SourceColour;
}
pCurrentSource+=1;
pCurrentOutput+=1;
}
pCurrentSource+=(nWidth*nLineGap);
pCurrentOutput+=(nWidth*nLineGap);
}
} else {
if (hPreviousLineHeights==NULL || hPreviousLineHeights_size<static_cast<int>(nWidth*sizeof(U32*)) ){
